-3a-12=19

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Solution for -3a-12=19 equation: 



-3a-12=19

We move all terms to the left:

-3a-12-(19)=0

We add all the numbers together, and all the variables

-3a-31=0

We move all terms containing a to the left, all other terms to the right

-3a=31

a=31/-3

a=-10+1/3

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